Dumping-scow



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THE Hollins FEIERS cov, vauro-uma. WASHINGTON, D. cA

lNo Model.; 2 Sheets-Sheet 2. A. WILLIAMS.

DUMPING sCoW.

Patented July 3l, 1894.

UNITED STATE-si-PATENT Orrrcmj .ANTHONY WILLIAMS, OF R'OOKPORT, MASSACHUSETTS.

DUMPlNG-SCOW.

SPECIFICATION forming part of Letters'latent No. 523,922, dated July 31, 1894.

Application iled January 26, 1894. Serial No. 498,122. (No modem i "To all whom it may concern:

Be it known that I, ANTHONY WILLIAMS, a citizen of the United States, and a resident of Rockport, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in Dumping-scows, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to improvements in dumping scows of the kind havinga well room with hinged discharge doors at its bottom so as to caus the load to be automatically dumped when said hinged doors are released.

The invention is carried out as follows, reference being had to the accompanying drawings, wherein t Figure 1, represents a top plan view of the improved dumping scow. Fig. 2, represents a central longitudinal section of the same on the line 2-2 shown in Fig. 1. Fig. 3, represents a cross section on the line 3-3 in Fig.

1 showing in dotted lines the doors open.l

Fig. 4, represents an end elevation showing the doors in open position; and Fig. 5, repre.- sents a detail cross section of the pawl and ratchet on line 5-5 shown in Fig. 1.

Similar letters refer to similar parts wherever they occur on the dierent parts of the drawings. y

A represents the hollow scow body on which A is the deck and A" the well for receiving the load, which well is open from top to bottom and provided atits lower portion with a pair of tloatable doors B B which are hinged at b b as is common in devices of this kind.

' A3 is a lateral partition in the Well A and I wish to state that for very long or large scows I may prefer to use two or more such partitions according tothe size of the scowl and theload it is to carry; such partitions 4 serving as supports for the middle chain guidesthrough which the chains are run that serve to hold the doors ,in closed positions as will hereinafter be more fully described.

In suitable bearings C (l C secured to the scow deck is journaled a shaftD to which are secured the chain wheels E E and E as shown.

e e are chains secured to the wheels E E and e is a similar chain secured to the middle chain wheel E. The chains e e are loosely guided through stationary vertical metal I pipes F F secured to the scow body a short distance beyond the ends of the well as shown in Figs. 1 and 2; such pipes going through said scow from deck to bottom board as Shown. ,f y To the lower end of the chainse e are secured metal buttons f f which when the chains are tightened-are brought against the under side of the meeting portions of the hinged doors thus serving to hold the latter in a closed position at all times except during the discharge of the load from the well ot' the scow. The middle chain e in a similar manner is loosely guided through the stationary vertical metal'pipe F secured in the partition A3 and:v

going vertically through the same as shown in Figs. 1, 2 and 3, and provided at its lower end with a metal button f adapted to be brought against the under side of the middle portions of the doors B B thus serving as a middle support for holding the doors closed during the loading and transporting of the scow; such a middle support for the doors is very advantageous particularly if the doors are very long as it prevents their sagging inthe middle particularly when designed lfor carrying a very heavy load as is frequently the casein dumping scows of this description.

The chains e e e may be tightened and wound upon their respective chain wheels E E E by applying hand spikes or equivalent devices to a drum G secured to the shaft D as shown.

In bearings after the chains ce e have been tightened sufficiently to cause their buttons f ff to be brought against the under side of the-meeting portions of the vdoors B B, the chain wheel shaft D is locked in position by vmeans of a ratchet wheel H secured to said shaft and a preferably jointed pawl I I adapted t-o engagea tooth on said ratchet wheel as shown in detail in Fig. 5; the said pawl is pivoted at t' to a block K secured to the deck of the scow. In said block is located a pivoted pawl releasing dog k which vwhen swung upward against the jointed pawl causes 1 IOO and outside of the deck endwhere it isguided` in a sui-table manner and connected to branch chains 'mm secured in their lower ends to the door ends as fully shown in Figs. l, 2 and 4.

In releasingthe supporting chainse ele the doorsiswngopeaallowing the loadl tobe dischargedand during such discharge the sprifngsi i from topltol bottom and having hinged; doors l Z are compressed so as tot cause-thebdoorsto commence theirinitial closing movementafter the loadhas dropped out of thewell, and are causedl'to continuertheir closing motion'against` theiund'er'side of thefscow' by'their own buoyancy. Atter beingfthusclosedf the chains-e e e are1 tightened as hereinabove describednntil their buttons fff' are brought tobear against the under side of said doorsatter'which the chainA wheel shaft is lockcdin position until `it is again desiredto discharge a new load Vand 5 name to` this'specification, in the'` presence of Byhavingthelockingbuttonsfff attached tothelends of chains as described the locking device is always readyfor use and is not lia'- of the: seawhere the discharge is made, or

during the discharge of the load which is a common occurrence in dumping scows in which vertically movable rigid locking bars or bolts are employed.

Having thus fully described the nature, construction and operationA of my invention, I wish to secure by Letters Patent and claiml. The hollow scow A having a well A" open from top to bottom and having hinged doors B, B, arranged at the bottom of said well, in combination with a hoisting shaft D journaled in bearingsat one sideof thescow,` and chains leading from said shaft through guides in the scow body andV provided at their free ends with buttons bearing against the under side 'of said doors and* serving as supponts-tohold the same closed;A substantially asdescribed.

2. Thel1'oll1ow"scowAI having :ti-well#` open EB', B, arranged at thebcttonrot` saidlwellgand -one or more pantitionsarranged transversely' ,of the'well|` in` combination w-it'lt a# hoisting l shaft D,chains leadfingffrom1tlie shaft throught :guides in thelscowbodly and saidf partitions, 1 and buttonsattachedi tothe free` endsot said chains and bearing against theunder'side of gsaid doors and serving as supportstolhold the same closed, substantially ask described.

In` testimony whereof?v I have signed` my two subscribing witnesses, on thisi'thl day'o January, A. D. 1894. ANTHONY WILLIAMS:

Witnesses:

ALBAN ANDRN, KITTIEMa IIANsoN.` 

